Pretty much everything in the known universe was updated on Wednesday.

And assorted firmware updates for your MacBook…those tend to be important, so let’s go through them.

On Wednesday, Apple released MacBook Pro EFI Firmware Update 2.9 for its mid-2012 MacBook Pro notebook. The update, a 4 megabyte download, resolves an issue which can cause the system to hang during heavy processor loads and requires an Intel-based mid-2012 MacBook Pro running Mac OS X 10.7.4 or later to install and run.

The company also released MacBook Air SMC Update 1.7 for its late-2010 MacBook Air notebook. The update, a 668 kilobyte download, enables Power Nap support on MacBook Air (Late 2010) computers, is recommended for all users running OS X v10.8.2 or later and requires an Intel-based late-2010 MacBook Air running OS X 10.8.2 or later to install and run.

Second to last, the company also released MacBook Pro Retina EFI Update 1.0 for its mid-2012 MacBook Pro Retina Display notebook. The update, a 5.2 megabyte download, resolves an issue which can cause the system to hang during heavy processor loads, and resolves an issue where NetBoot does not function properly when using an Ethernet adapter and requires an Intel-based MacBook Pro with Retina Display running Mac OS X 10.7.4 or later to install and run.

Finally, the company also released MacBook Air EFI Firmware Update 2.5 for its mid-2012 MacBook Air notebook. The update, a 5 megabyte download, fixes an issue where Turbo Boost does not activate when using Boot Camp, and resolves an issue where NetBoot does not function properly when using an Ethernet adapter and requires an Intel-based mid-2012 MacBook Air running Mac OS X 10.7.4 or later to install and run.

As always, these updates can be located, snagged and installed via Mac OS X’s Software Update feature. Be sure your computer is plugged in while the firmware updates take place and you should be home free.

If you’ve tried the firmware updates and have any feedback to offer, please let us know in the comments.